title: Correlative light-electron fractography for fatigue striations characterization in metallic alloys.
abstract: The correlative light-electron fractography technique combines correlative microscopy concepts to the extended depth-from-focus reconstruction method, associating the reliable topographic information of 3-D maps from light microscopy ordered Z-stacks to the finest lateral resolution and large focus depth from scanning electron microscopy. Fatigue striations spacing analysis can be precisely measured, by correcting the mean surface tilting with the knowledge of local elevation data from elevation maps. This new technique aims to improve the accuracy of quantitative fractography in fatigue fracture investigations.
authors.affiliation: LAIMat - Materials Imaging Laboratory, Materials and Technology Department, Faculty of Engineering at Guaratinguetá, UNESP - São Paulo State University, Guaratinguetá, SP, Brazil.
authors.forename: Luis Rogerio de Oliveira
authors.initials: LR
authors.lastname: Hein
authors.forename: José Alberto
authors.initials: JA
authors.lastname: de Oliveira
authors.forename: Kamila Amato
authors.initials: KA
authors.lastname: de Campos
keywords: 3D reconstruction; fatigue; fractography; optical microscopy; scanning electron microscopy (SEM)